Distribution of Channel Catfish in Minnesota and an … of Channel Catfish in Minnesota and an...
Transcript of Distribution of Channel Catfish in Minnesota and an … of Channel Catfish in Minnesota and an...
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Distribution of Channel Catfish in Minnesota and an update on
Minnesota River fisheries projects
Tony Sindt; Minnesota River Specialist
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Minnesota Fish Distributions
Fishes of MN Mapper
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Channel Catfish Distribution
• CCF are currently present in over 330 lakes• 47 lakes with DNR catches of CCF > 30”
• We know Channel Catfish are expanding within Minnesota
• From Fish Mapper:• 104 lakes in 1990 -> 176 in 2000 -> 289 in 2016
• Sources: stocking, illegal stocking, natural migration, barrier removal
• Milder winters and greater connectivity will likely lead to increased expansion
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Catfish Distribution
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Minnesota River Channel Catfish
6-12"
12-18"
18-24"
24-28"
28-30"
30-32"
>32"
2093 CCF captured in hoop nets downstream of G-Falls
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Age and Growth
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1
2
3 4 5
6
78 9
Age and Growth
10
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Age
Length
(m
m)
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
0
100
200
300
400
500
600
700
800
900
Channel Catfish Growth in the Minnesota River
von Bertalanffy growth function: length = 938.59760 * (1-exp(-(0.08724 * (Age - 0.10848))))
Aged 440 Spines
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Age
Length
(m
m)
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
0
100
200
300
400
500
600
700
800
900
Channel Catfish Growth in the Minnesota River
von Bertalanffy growth function: length = 938.59760 * (1-exp(-(0.08724 * (Age - 0.10848))))
Age 5 = 12.8”
Age 10 = 21.4”
Age 15 = 26.9”
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Minnesota River Channel Catfish
6-12"
12-18"
18-24"
24-28"
28-30"
30-32"
>32"
2093 CCF captured in hoop nets downstream of G-Falls
> age 9
> age 12
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Acoustic Telemetry
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Stationary Receivers6 receivers currently installed in MN River
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As of Spring 2017
Pool 21 Paddlefish
1 Common Carp1 White Bass2 S. Buffalo5 B. Buffalo
MNR3 Shovelnose
Sturgeon
Stationary Receivers
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Pool 21 Paddlefish
1 Common Carp1 White Bass2 S. Buffalo5 B. Buffalo
MNR3 Shovelnose
Sturgeon
Stationary ReceiversAs of Spring 2017
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4-1
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4-2
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4-8
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4-14
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4-17
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4-24
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5-23
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7-9
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7-10
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7-11
7-11
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Shovelnose Sturgeon Telemetry
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North Redwood 8-29
52326 52325
52324
52327
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North Redwood 8-30
53220532215322253223
53225
53226
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North Redwood 9-12
53221
53220
53227
53224
5322253225
53226
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North Redwood 10-7
53227
Tagging Site
54 river miles downstream in 25 days
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North Redwood 10-20
53221
53220
53223
5322453226
53222
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North Redwood 10-27
53221
53220 53225
5322453226
53223
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North Redwood 11-28
53221
53220
5322653224
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53221
53224
North Redwood 3-27-2017
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Upcoming Projects
Evaluate Age and Growth of Channel Catfish upstream of Granite Falls Dam
Conduct long-term telemetry study on Flathead Catfish and Paddlefish